1,721,012 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The demonstration of a smartphone-enabled detector and network for a citizen science approach to aviation space weather radiation monitoring
Full text linkDuring a subset of solar energetic particle events, known as Ground Level Enhancement (GLE), the flux of ionising radiation can increase significantly at aviation altitudes. To date there have only been a handful of spot measurements of the enhanced GLE environment at aviation altitudes to verify scientific models. It is not currently possible to know the environment experienced and to accurately tell whether regulatory exposure limits have been exceeded during a GLE. The International Civil Aviation Authority (ICAO) have published, in their Space Weather Manual, that on-board radiation monitoring would be the most effective and accurate way of determining the exposure during a solar event. Unfortunately, without some new regulatory requirements, it is highly unlikely that airlines will install permanent detector units on their aircraft in the foreseeable future.This thesis examines the feasibility of utilising citizen science as a novel, alternative approach, by taking advantage of modern personal devices, to monitor radiation levels at flight altitudes during Solar Particle Events (SPEs), as well as providing a way of boosting awareness about space weather and atmospheric radiation. It details the creation, and development, of a new integrated system, called the Smart Atmospheric Ionising Radiation (SAIRA) Network, where volunteers can operate newly designed detector units during their normal air travel purposes.The work has designed, developed and tested six smartphone-connected ionising radiation detector units that can be carried on an aircraft as hand-luggage and operated through a custom-built Android application. The detectors are based upon proven silicon photodiode sensor technology and are capable of measuring an energy deposition range of 200 keV to 100 MeV. They connect to the Android smartphones via a USB connection and use a 5V Lithium-Ion (Li-Ion) USB power supply.The SAIRA detectors were tested at the CERN-EU High Energy Reference Field (CERF) in a representative (GLE) environment and were flown on 121 flights by 30 individual volunteers. The volunteers were able to collect 436 hours worth of `background' atmospheric radiation data from 79 different routes using 22 different aircraft types and 21 airlines. The recorded flight data sets were uploaded from each smartphone after each flight via the Android application to a server. The data was made available in a publicly accessible database of flight radiation measurements on a newly built website. Additionally, the test results from the CERF facility show that the detectors are capable of reliably measuring a `Severe' GLE event, according to the ICAO scale, and the Android application is able to display a real-time warning based upon both the ICAO scale and the D-Scale.Based on the combined results of the technical development and operational experience of the SAIRA network, it is concluded that using citizen science is a feasible, and novel, way of providing constant global radiation monitoring at aviation altitudes, but there are concerns around the financial viability and the scale of the network required. The work has created successful demonstration network and furthermore it shown how the detectors, using the inbuilt warning displays, could be used by pilots as a real-time in-flight radiation warning system. However, the cost of the detectors would need to be significantly reduced or the network have substantial financial backing for it to work as a citizen science system alone
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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